Howto gentoo
commands
list gcc profiles:
gcc-config --list-profiles
change gcc profile:
gcc-config 2 source /etc/profile
create gpg keys for binpkgs:
getuto
unmask package
edit /etc/portage/package.unmask:
sys-libs/glibc
package use flag
edit /etc/portage/package.use/vlc
media-video/vlc lua